Improvement in hubs of wheels for windmills



KEELER & C. C. HARRIS.

l Huhs of Wheels for Wind-Mills. lN0.151,399.

Patented May 26,1874.

Fig@

W7 f w JOSAH KEELER AND CHARLES C. HARRIS, OF KEVANEE, ILLINOS.

llPRGfvlENT Ehi HUBS OF WHEELS FR WENDEWLLS.

Specification forming part of Leters Patent No. hlg), dated May 2G,1874; application iiled November 7, 1873.

To all whom it may concern:

Be it known that we, Josmn Kampen and CHARLES C. HARRIS, both ofKewanee, in the county of Henry and State of lllinois, have inventedcertain new and usefulImprovements in findmills and we do hereby declarethe following to be afull, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being had to the accompanyingdrawings, which form part of this specification.

Our invention relates to a peculiar construetion ofthe hub particularlyadaptable to wheels of windmills, and is formed of two parts, one oflarger diameter than the other. The outer part ot' the hub, which is bypreference of the smaller diameter, is provided with a series of teethor serrations formed on its outer periphery, and these ser 1a ions orteeth are inclined at a'certain angle, and this part is also provided onits inner periphery with projec tions having holes formed therein forthe reception of bolts, by means of which the two parts are boltedtogether. The inner or larger portion of the hub has also a series ofserrations or teeth formed on its outer periphery, and a correspondingseries of teeth or serrations on its inner periphery, such serrations orteeth being inclined at a certain angle similar to the outer or smallerportion of the hub, which latter lits into the larger portion, andbetween these three series of teeth or serrations the fans or vanes ofthe wind-wheel are inserted. rfhis larger portion or" the hub has aiseprojections formed on its inner periphery, correspendin g with theprojections of the outer or smaller portion of the hub, such projectionshaving corresponding holes formed therein for the reception of bolts orpins, by means of which the two parts are bolted together. Theseserrations or teeth form a irm bearing for the ends of the fans orvanes, which, when inserted, and the two portions are bolted togetherrmly, clasp and hold such fans or vanes in position.

It will be readily seen that by this arrangement of the hub afirmsupport for the fans or vanes is provided, as well as a ready means toeasily repair such fans or vanes when either of them becomes damaged ornew ones in sorted, if it becomes necessary.

ln order that our invention may be better understood, we will proceed todescribe the same by aid of the accompanying drawings.

Figure l is a side elevation, showing the two parts bolted together, andforming the hub. Fig. 2 is a plan, Fig. 3 an under-side view, and Fig. 4a side elevation, oi' the smaller portion of the hub. Fig. 5 is a plan,Fig. 6 an under-side View, and Fig. 7 a side elevation of the largerportion of the hub.

al is the outer or smaller portion of the hub a, provided on the outerperiphery with a series or" serrations or teeth, a2, set at an angle,and having a horizontal side, a3, and an inclined side, a4, for thereception ofthe fans or vanes a5. This portion al of the hub a, has alsoformed on its inner face or periphery a number of projections, a6,having holes, al, formed therein for the reception of bolts r pins, a8,by means of which the two parts or sections of the hub are boltedtogether. The inner or larger portion ZJ of the hub has also a series ofserrations or teeth, b1, formed at an angle, having a horizontal side,b2, and an inclined side, b3, and this portion is further provided onits inner periphery with another se ries of teeth or serrations, b4,formed similarly to those on the outer periphery. b5 are projectionsformed on the inner face or periphery of the part b, such projections b5having holes D6 formed therein for the reception of bolts or pins a8,such projections b5 corresponding with the projections a6 of the smalleror outer portion al of the hub. In order to secure the fans or vanes a5in position in the hnb, the two portions a and b are bolted looselytogether 5 the fans or vanes a5 are then inserted between the series ofserrations or teeth b1 and b4 of the inner or larger portion b and theseries of serrations or teeth a2 of the outer or smaller portion al, andwhen so inserted the bolts are tightened up, bringing the two sectionsal and b closely together, clasping or holding the fans or vanes a5securely in position. By means of these bolts or pins a8 the fans orvanes a5 may be readily removed from the hub when either of them becomesdamaged, and a new one inserted in its place,

Having thus described our invention, what We claim7 and desire to secureby Letters Patent, isl ll. In the Wheel of a wind1ni11,the hub a, formedin two parts, al b, having serrations or teeth a2 b2 b4 formed thereon,substantially as shown and described.

2. In the Wheel of a Windmill, the hub a, formed in two parts, a1 b,having serrations or teeth co2 b2 b, projections or ears a6 b5, holes aY 116, and bolts or pins a", combined snbstantaily as set forth.

In testimony that We claim the foregoing we have hereunto set our handsthis 1st day of September, 1873.

J OSIAH KEELER.

CHARLES C. HARRIS.

Witnesses:

CRAs. NORTHROP, E. R. KERR.

